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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 338 (Transfer Case - Mp 3023/3024-NQH) >> Diagnostic Information and Procedures >> DTC C0374 >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON, engine OFF.
  2. Install a scan tool.
  3. Ensure no other ECBM or TCCM codes are set.
    • If any other EBCM or TCCM DTC's are set, diagnose them first.
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